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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeMay 17th 2011

have split off geometric surjection/embedding factorization from the relevant entries. Maybe I find the time to spell out the proof there.

• CommentRowNumber2.
• CommentAuthorUrs
• CommentTimeMay 18th 2011

I have now written out the proof of the existence of the factorization. Next I’ll do the uniqueness

(I am just following the books, of course, closely even, nothing original here)

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeMay 18th 2011

now there is also the argument for the essential uniqueness of the factorization

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